cmd/go: list errors for import is a program, not an importable package

[andig]

What version of Go are you using (go version)?

$ go version
go version go1.21.0 darwin/arm64

Does this issue reproduce with the latest release?

yes

What operating system and processor architecture are you using (go env)?

go env Output

$ go env
GO111MODULE=''
GOARCH='arm64'
GOBIN=''
GOCACHE='/Users/andig/Library/Caches/go-build'
GOENV='/Users/andig/Library/Application Support/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFLAGS=''
GOHOSTARCH='arm64'
GOHOSTOS='darwin'
GOINSECURE=''
GOMODCACHE='/Users/andig/go/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='darwin'
GOPATH='/Users/andig/go'
GOPRIVATE=''
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/usr/local/go'
GOSUMDB='sum.golang.org'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/usr/local/go/pkg/tool/darwin_arm64'
GOVCS=''
GOVERSION='go1.21.0'
GCCGO='gccgo'
AR='ar'
CC='clang'
CXX='clang++'
CGO_ENABLED='1'
GOMOD='/Users/andig/htdocs/evcc/go.mod'
GOWORK=''
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
PKG_CONFIG='pkg-config'
GOGCCFLAGS='-fPIC -arch arm64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -ffile-prefix-map=/var/folders/sv/rs_453y57xj86xsbz3kw1mbc0000gn/T/go-build977151873=/tmp/go-build -gno-record-gcc-switches -fno-common'
uname -v: Darwin Kernel Version 22.5.0: Thu Jun  8 22:22:19 PDT 2023; root:xnu-8796.121.3~7/RELEASE_ARM64_T8103
ProductName:		macOS
ProductVersion:		13.4.1
ProductVersionExtra:	(c)
BuildVersion:		22F770820d
lldb --version: lldb-1403.0.17.67
Apple Swift version 5.8.1 (swiftlang-5.8.0.124.5 clang-1403.0.22.11.100)

What did you do?

Install build tools from tools.go:

go install $(go list -f '{{join .Imports " "}}' tools.go)

What did you expect to see?

No error

What did you see instead?

go list errors:

tools.go:6:2: import "github.com/dmarkham/enumer" is a program, not an importable package

I realise this might not be a bug per se but it is a change of behavior over go1.20.

[seankhliao]

note that the -e flag is available

[andig]

Thank you, wasn't even aware of this flag: -e works when used with -f.

[bcmills]

Duplicate of #59186

[andig]

@bcmills not quite sure why this is marked as duplicate. From what I understand the reasoning is that:

• main packages should never have been allowed by go list
• these errors were not consistently reported in the past (and are not reported consistently today or the referenced issue would not be open- although it seems to relate to -test only?)
• -e allows proceeding anyway to workaround is in place.

Please correct me (only if wrong). Thank you!

[bcmills]

• these errors were not consistently reported in the past (and are not reported consistently today or the referenced issue would not be open- although it seems to relate to -test only?)

The errors were previously not reported consistently. For some unknown reason, the code changes for -pgo=auto in 1.21 cause them to be reported in cases where they were previously not diagnosed.

#59186 is still open because we still don't understand why the errors were previously not reported, and we still don't know whether there are causes where they remain unreported today.

[nizarennciri]

I have the same err and I can fix him ,